Study of NanoKnife for Ablation of Prostate Cancer in Low and Intermediate Risk Patients


About this study

The purpose of this study is to determine the safety of the NanoKnife treatment in prostate cancer tissue when used in a low and intermediate risk patient population.


Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

Subjects are required to fulfill all the following criteria to be included in the study:

  • Has at least a 10 year life expectancy.
  • Have histologically confirmed organ-confined prostate cancer - clinical Stage T1 or T2a.
  • Have a PSA less than 10 ng/mL.
  • Has Gleason score 3+3 or 3+4/4+3.
  • Has 10 mm or less of cancer in any biopsy core.
  • No evidence of extraprostatic extension or seminal vesicle invasion by mpMRI.
  • Able to visualize prostate gland adequately on transrectal ultrasound imaging during enrollment evaluation.
  • Transperineal prostate biopsies (template mapping and/or limited targeted) correlating with low to intermediate risk lesion1 in the area of the MR-visible lesion (within 2 Barzell zones).
  • An visible lesion on mpMRI, that is accessible to IRE treatment.
  • Must sign a written informed consent.
  • Understands and accepts the obligation and is logistically able to present for all scheduled follow-up visits.

Exclusion Criteria:

Subjects will be excluded from participation in the study if they meet any of the following:

  • Have known hypersensitivity to pancuronium bromide, atricurium or cisatricurium.
  • Unfit for anthesthia or have a contraindication for agents listed for paralysis.
  • Have an active urinary tract infection (UTI).
  • Have a history of bladder neck contracture.
  • Are interested in future fertility.
  • Have a history (within 3 years) of inflammatory bowel disease.
  • Have a concurrent major debilitating illness.
  • Had a malignancy, other than prostate or skin cancer (except malignant melanoma), within 5 years.
  • Have any active implanted electronic device (e.g., pacemaker).
  • Are unable to catheterize due to a urethral stricture disease.
  • Have had prior or current prostate cancer therapies:
    • Biologic therapy for prostate cancer;
    • Chemotherapy for prostate cancer;
    • Hormonal therapy for prostate cancer within three months of procedure;
    • Radiotherapy for prostate cancer;
    • Surgery for prostate cancer.
  • Have had prior transurethral prostatectomy (TURP), or urethral stent.
  • Have had prior major rectal surgery (except hemorrhoids).
  • Unfit for pelvic MRI scanning (e.g., severe claustrophobia, permanent cardiac pacemaker, metallic implant etc… likely to contribute significant artefact to images).
  • Have a prior diagnosis of prostate cancer.
  • Have a non-visible tumor on mpMRI.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Derek Lomas, M.D., Pharm.D.

Closed for enrollment

Contact information:

Mikayla Schmidt

(507) 422-5768

More information


Publications are currently not available

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions